Deep Fission, Inc. (FISN)

Price$7.15Cached quote
FISNNasdaq
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Financial charts

Net income

Total cash / debt

CashTotal debt

Financial statements

4 annual periodsNewest to oldest
2025202420232022
Revenue$0$0——
Research & development$6.6M$661,183——
Operating expenses$21.4M$4.1M——
Operating income−$21.4M−$4.1M−$47,625−$49,408
EBITDA−$21.4M−$4.1M——
Net income−$61.0M−$5.7M−$47,625−$49,408
Basic EPSper basic share-$2.41-$0.57-$0.01-$0.01
Diluted EPSper diluted share-$1.01-$0.57-$0.01-$0.01

Owners

Reported shareholders

Reference date Jun 30, 2026
Muller Elizabeth · ≈17.16% of listed sharesMuller Richard · ≈8.70% of listed sharesTompkins Mark N. · ≈3.17% of listed sharesBlue Owl Capital Holdings LP · 2.23% of listed sharesAngell Jonathon · ≈0.54% of listed sharesElevation Wealth Management LLC · 0.50% of listed sharesJacobs Ian Seth · ≈0.46% of listed sharesUBS Group AG · 0.33% of listed sharesGoldman Tepper Leslie · ≈0.22% of listed sharesCONSOLIDATED PRESS INTERNATIONAL HOLDINGS LTD · 0.22% of listed sharesCITADEL ADVISORS LLC · 0.18% of listed sharesSchmitz William Mark · ≈0.17% of listed sharesPeres Mark Wayne · ≈0.14% of listed sharesLPL Financial LLC · 0.12% of listed sharesGEODE CAPITAL MANAGEMENT, LLC · 0.05% of listed sharesEssential Investment Partners LLC · 0.04% of listed sharesCHAPIN DAVIS, INC. · 0.03% of listed sharesGOLDMAN SACHS GROUP INC · 0.03% of listed sharesBHK Investment Advisors, LLC · 0.03% of listed sharesPRELUDE CAPITAL MANAGEMENT, LLC · 0.02% of listed shares
≈17.16%of listed shares
Muller Elizabeth10.25M shares · Sep 5, 2025
View holders
Top 20 reported holders of FISN
Holder% owned
Muller Elizabeth
≈17.16%10.25M shares
Muller Richard
≈8.70%5.2M shares
Tompkins Mark N.
≈3.17%1.89M shares
Blue Owl Capital Holdings LP
2.23%1.33M shares
Angell Jonathon
≈0.54%324.52K shares
Elevation Wealth Management LLC
0.50%298.34K shares
Jacobs Ian Seth
≈0.46%275K shares
UBS Group AG
0.33%198.5K shares
Goldman Tepper Leslie
≈0.22%134K shares
CONSOLIDATED PRESS INTERNATIONAL HOLDINGS LTD
0.22%133.33K shares
CITADEL ADVISORS LLC
0.18%110K shares
Schmitz William Mark
≈0.17%103.93K shares
Peres Mark Wayne
≈0.14%86.61K shares
LPL Financial LLC
0.12%70.86K shares
GEODE CAPITAL MANAGEMENT, LLC
0.05%27.33K shares
Essential Investment Partners LLC
0.04%26.4K shares
CHAPIN DAVIS, INC.
0.03%19K shares
GOLDMAN SACHS GROUP INC
0.03%17.37K shares
BHK Investment Advisors, LLC
0.03%15K shares
PRELUDE CAPITAL MANAGEMENT, LLC
0.02%14.71K shares

Percentages use 59.75M shares of this listed class outstanding on Jun 30, 2026. ≈ compares the latest reported holding with a share total from a different date; it is not a confirmed current stake.

Gray completes the 100% scale. Reported positions may overlap; holders have different reporting dates.

Source: SEC Form 4 ↗Updated Sep 29, 2026 · Quarterly data

Insider buys & sells

Jul 1, 2024–Jun 30, 2026
Buys1$0.00 disclosed value
Sells (SEC code S)1$0.00 disclosed value
2 recent transactions
TransactionInsiderTypeSharesPriceValueOwned after
Aug 26, 2025Form 4Tompkins Mark N.Director,TenPercentOwnerSellCommon Stock25.0K$0.00$0.004.72M
Aug 26, 2025Form 4Jacobs Ian SethPresident, CEO, CFO, SecretaryBuyCommon Stock25.0K$0.00$0.00275.0K

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